Hi Daan,

Kester makes some claims about reducing voiding. Their R560 water soluble
paste has a statement that it reduces voiding from 25% to less than 10%.
Their R562 water soluble formula has a statement that voids will be reduced
to less than 3%. I'll send you the *.PDF datasheets for both.

I've never done any tests to verify that, so maybe you'll find out if it's
true!

-Steve Gregory-